hi, i have had a tank of malawi cichlids for a bout 4 months now and every was perfect until i lost a few to unexplained deaths. a week later i lost a couple more. what i noticed though is before they did die there back fins seemed to be paralized so the fish cudnt swim.it is also laying on the bottom of the aquarium struggling to move if ne 1 could tell me why thiss is happeneing and how to treat it i would be very grateful. i am currently treating it with melafix which was reccommended by the fish shop. my ph is about 8.0 temp is 28-29C my nitrate and ammonia levels are 0. my tank is about 100l... please help
thanks
thanks
